Ips pini attack density in ponderosa pine thinning slash as related to felling date in eastern Oregon
By: by Charles Sartwell.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: Research note -- PNW-131.; USDA Forest Service research note PNW -- 131.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S.D.A. Forest Service
Published: 1970
Place of publication: [Portland, Or.]
Language: eng
Subjects: Ips -- Oregon, Eastern.; Ponderosa pine -- Diseases and pests -- Oregon, Eastern.
Notes: Caption title.

"October 1970."

Includes bibliographical references (p. 7-8)